This is Mac OS X 10.7 Lion Golden Master (GM) build number 11A511, bootable DVD image. The term "Golden Master" means that the software is likely a final build that will be identical to the software that will be released to the general public, barring the discovery of any last-minute bugs or problems.

Apple has also seeded a GM version of the OS X Lion Server components, Xcode 4.1 Developer Preview 7, and iCloud for OS X Lion Beta 3. Finally, Apple has pushed out a Java for Mac OS X 10.7 release via Software Update. You can google to locate other software or enroll in OS X developer program.

Remember although its very likely to be final RTM version, its still beta and subject to changes. So act accordingly.

This version is only for Intel Apple hardware. Detailed instructions on how to make bootable USB stick inside the file.Or you can burn image on DVD or USB stick.

Description: Build OS X Mountain Lion 10.8.1 is at number 12B17. In the first update Apple asks developers to focus on addressing the key mistakes that have been found in the original version of the Mountain Lion, including the work of the Exchange, PAC Proxies browser, Safari, USB-connections and stability of the audio broadcast through the Thunderbolt.

Apple's update to OS X Lion Preview 3 adds a very helpful new "Do Not Disturb" feature for notifications. The feature is a toggle accessible at the top of Notification Center that allows users to block incoming alerts and banners.